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16AH, 4s lipo 2.5 lbs $99

Posted: Mon Sep 11, 2017 1:19 pm
by mtxjohn
I bought the best battery available ( I feel). 16 AH, 4 s lipo (16.8 v max) 2.5 lbs. $99. Can crank out 160 amps for 6 minutes lol http://www.ebay.com/itm/MULTISTAR-16000 ... SwFfhXjdhN

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Mon Sep 11, 2017 3:28 pm
by toycrusher
Lithium batteries are awesome, but many (myself included) feel that their dangers outweigh their advantages when it comes to being used around children. This site does NOT condone the use of Lithium batteries (or non-sealed lead acid) in BPROs.

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Mon Sep 11, 2017 3:52 pm
by mtxjohn
Lithium is everywhere, from cellphones to power tools to electric cars and laptops. Its likely your child has probably handled a lithium powered device today. Using SLA's is just ..ridiculous when theres such a better option. Is this not an enthusiast/modder site? Ive used lipo around my kids for years in RC cars...just follow simple rules and you wont have a problem. How much would a 16 AH sla weigh? 30 pounds lol? Power to weight ratio is everything in electrics. With my battery, I have a little warning buzzer that attaches to the balance plug to warn of low voltage

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Tue Sep 12, 2017 9:05 am
by toycrusher
It's a free world. If your confident in proper usage and handling, and your confident in your children's ability to heed applicable warnings, then by all means run with it.

But the average kid doesn't heed warnings, they run 'em till the battery won't go anymore, and then they get upset that the ride stopped. There's a huge difference between a 2 AH cordless drill battery and a 16AH hobby battery like you linked to. You can take any risks you wish with your own kids, but as a community, we WILL NOT endorse the use of Lithium batteries (or wet acid batteries) around kids.

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Mon Sep 18, 2017 6:33 am
by Harley
mtxjohn wrote:I bought the best battery available ( I feel). 16 AH, 4 s lipo (16.8 v max) 2.5 lbs. $99. Can crank out 160 amps for 6 minutes lol http://www.ebay.com/itm/MULTISTAR-16000 ... SwFfhXjdhN
You can also buy them on https://hobbyking.com/en_us/multistar-h ... -pack.html, bought one there myself, can really give a kick to a PegPerego John Deere.

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Tue Sep 19, 2017 5:17 am
by gtkids
If you go the LiPo route, make sure you use one of these:
https://hobbyking.com/en_us/hobbykingtm ... 2s-4s.html
They also sell the MultiStar batteries and many others there.

If you don't and your kid runs it till it stops, your battery is ruined. Trying to recharge it may result in a fire. LiPo batteries are very sensitive to undervoltage or overcharging.

low voltage alarm

Posted: Wed Sep 20, 2017 5:23 pm
by mtxjohn
Wow Hobbyking price is great! Second....yes the alarm is a must have. Otherwise...danger for sure.

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Wed Sep 27, 2017 12:01 am
by Hackish
I think the key is to run brushless with an ESC that supports low voltage power reduction and then shutoff.

This evening I let my kid drive to the park (about 1/2 mile) on a 12V 12AH SLA. There was a second one in for the trip home and sure enough it died about 1/3 of the way home. The trouble with LIPO is there is far less warning. You'd literally want a power meter on the dash that recorded how much energy has been spent.

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Tue Nov 28, 2017 7:42 am
by k_dub09
Hackish wrote:I think the key is to run brushless with an ESC that supports low voltage power reduction and then shutoff.

This evening I let my kid drive to the park (about 1/2 mile) on a 12V 12AH SLA. There was a second one in for the trip home and sure enough it died about 1/3 of the way home. The trouble with LIPO is there is far less warning. You'd literally want a power meter on the dash that recorded how much energy has been spent.
exactly what I was going to say. Most ESCs have selectable voltage cutoffs for your individual setup. makes it pretty dummy proof.

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Wed Nov 29, 2017 9:07 am
by lexx0116
You can give this a try as well for 24v setup:

Re: 16AH, 4s lipo 2.5 lbs $99

Posted: Wed Nov 29, 2017 10:26 am
by lexx0116
Here is a Lithium Ion battery operated car: